Rotary engine.



- PATENTED JAN. 16, 1906.

G. A. L. LIND.

ROTARY ENGINE.

APPLIOATION FILED JUNE 13,1905.

| K l n I l l I.

GUSTAF A. L. LIND, OF NEW DOROHESTER, MASSACHUSETTS.

ROTARY ENGINE.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed June 13, 1905. Serial No. 265,012.

To all whom it may concern.-

Be it known that I, GUsTAF A. L. LIND, a citizen of the United States, residing at New Dorchester, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Rotary Engines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention is a rotary engine, and relates more particularly to the cylinder and contained parts, having for its object the provision of means for maintainin a noiseless operating condition. I accomplish this obj ect by providing means for positively controlling the position of the pistons.

A further object is to so arrange the parts in connection with the above operation as to prevent all improper escape of steam.

One of the most serious objections to the practical efficiency of rotary engines results from the escape of steam, and accordingly I have provided in connection with the pistoncarrier means for tightly closing all avenues for the escape of steam about the piston.

My invention will be more fully understood in the course of the following description, reference being had to the accompanying drawings, in which I have illustrated my invention.

In the drawings,Figure 1 isavertical crosssectional view through the cylinder, showing the internal construction of the engine. Fig. 2 is a central longitudinal sectional view thereof. Fig. 3 represents, in side elevation, a modified construction.

In the type of engine shown in my United States Patent No. 723,689, dated March 24, 1903, there is a constant tendency to pound and produce an objectionable noise, especially when the engine is run at high speed, due in part to the slotted links operating with relation to the crank-pin, and accordingly the principal object of my present invention is to obviate this noise besides other objectionable features, as will more fully ap pear in the course of the following description.

Mounted on a suitable base 1 is a cylinder 2, provided at its upper end with steam-ports 3 4, leading into the chamber 5 and controlled by any suitable valve mechanism, a slidevalve 6 being herein shown for purposes of illustration merely, a steam-inlet 7 and exhaust 8 being provided. The rotary-engine shaft is indicated at 9 and carries at its inner end a carrier-plate 10 and carrier-ring 11, secured to said plate by bolts 12 and provided at its opposite side with a head or plate 13, fast on a hub 14, mounted on a sleeve 15 and bushing 16. Within the bushing 16 is a reversing-shaft 17, provided at its inner end with an eccentric pin or crank 18, on which are freely pivoted oppositely-extending arms 19 20, pivotally connected at their outer ends to levers 21 22, pivoted, respectively, at 23 24 to the head 13 of the piston-carrier.

As herein shown there are two opposite pistons 25 26, mounted in radial ways 27, provided therefor in the carrier. These pistons are pivotally operated by links 28 29, pivoted at 30 31 to the levers 21 22. The bore of the cylinder is made to correspond to the positive throw of the pistons resulting from the aforesaid arrangement, the arrangement of levers, as herein shown, requiring the bore from the point 32 upwardly to the top of the cylinder to have as its center the axis of the pin 18 when thrown to the left, Fig. 1, the bore from the point 33 upwardly to the top of the cylinder having for its center the axis of said pin when thrown to its right-hand position and the bore between the points 32 and 33 conforming to the path of the piston, which is approximately on an are from the axis of the reversing-shaft 17 as a center.

Opposite the end of each piston I provide a packing-plate 34, held forward by a spring 35, mounted in a recess 36, provided in the carrier, and cooperating with the outer ends of these plates I provide circular packingrings 37. The result is that as the pistons move out and in the plates 34 and rings 37 maintain a close joint at the ends of the carrier, and especially between the carrier and the chamber 5.

In operation the piston 25 or 26, as the case may be, is maintained in closing engagement with the wall of the cylindenchamber for approximately half of its revolution, according to the throw of the crank-pin to the right or left, being herein shown as thrown to rotate the engine over toward the right, Fig. 1. The connections 19 21 28 maintain the piston positively outward during its working travel and pull it positively inward during its idle or exhaust period, the result being that all noise and pounding are effectually elimi-' nated, and also there are no springs and parts uncertain of operation.

In Fig. 3 I have shown a modifiedconstruction for maintaining positive control both in and out of the pistons, in which I have loosely mounted on the crank-pin 18 a gear 38 and have provided each piston with a tooth-sector 39, meshing therewith, thereby preventing all play or looseness, while yet permitting a slight relative movement of the links and levers required;

I wish it understood that many changes in io form and arrangement of parts may be resorted to within the spirit and scope of my invention.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a rotary engine, having a cylinder, a piston, a carrier for said piston, and an engine-shaft driven by said carrier and piston, of a reversing-shaft having an eccentric crank-pin withinsaid cylinder, and connections between said piston and crank-pin for maintaining said piston. under positive control at all times. I

2. The combination, with a rotary engine, having a cylinder, a piston, a carrier for said piston, and an engine-shaft driven by said. carrier and piston, of a reversing-shaft having an eccentric crank-pin within said cylinder, and connecting means between said piston and crank-pin for maintaining a noiseless operation of the piston and its operating parts.

3. The combination, with a rotary engine, having a cylinder, a piston, a carrier for said piston, and an engine-shaft driven by said carrier and piston, of a reversing-shaft having an eccentric crank-pin within said cylinder, and means movable with said carrier and connected to said piston and crank-pin for positively moving said piston outwardly during the working travel of the piston.

4. The combination, with a rotary engine, having a cylinder, a piston, a carrier for said carrier and piston, of a reversing-shaft having an eccentric crank-pin within said cylinder, an arm pivoted on said crank-pin, a link pivotally. connected to said arm, and means cooperating with said link and arm for positively moving said piston out and in relatively to said cylinder.

5. The combination, with a rotary engine, having a cylinder, a piston, a carrier for said piston, and an engine-shaft driven by said carrier and piston, of a reversing-shaft having an eccentric crank-pin within said cylinder, an arm pivoted on said crank-pin, a lever pivoted to said carrier and arm, and a link pivotally connecting said lever and piston.

6. In a rotary engine, a cylinder, a pistoncarrier, a piston radially movable in said carrier, means for automatically moving said piston, and packing-plates carried by said carrier and yieldingly engaging the opposite ends of said piston, said carrier and cylinder being relatively eccentric, and said packingplates extending outwardly in said carrier coextensive with the outermost movement of said piston.

7. In a rotary engine, a cylinder, a piston carrier, a piston radially movable in said car rier, means for automatically moving said piston, and packing-plates carried by said carrier and yieldingly engaging the opposite ends of said piston, said carrier and cylinder being relatively eccentric, and said packingplates extending outwardly in said carrier coextensive with the outermost movement of said piston, and opposite packing-rings carried by said carrier and embracing the outer ends of said plates.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUSTAF A. L. LIND.

Witnesses:

GEo. H. MAXWELL, M. A. JoNEs. 

